package cn.neusoft.filter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpFilter;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

//拦截所有路径
@WebFilter("/*")
public class CrosFilter extends HttpFilter {

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {

        System.out.println("------跨域设置-------");

        HttpServletResponse response = (HttpServletResponse) res;
        //注意：这里设置只允许http://localhost:8081进行跨域访问
        response.setHeader("Access-Control-Allow-Origin", "http://localhost:8888");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT, PATCH");
        response.setHeader("Access-Control-Max-Age", "3628800");
        response.setHeader("Access-Control-Allow-Headers", "x-requested-with,Authorization,content-type");

        //放行
        chain.doFilter(req,res);

    }


}
